Among the 62 mass shootings over the last 30 years that we studied, not a single case includes evidence that the killer chose to target a place because it banned guns. To the contrary, in many of the cases there was clearly another motive for the choice of location. For example, 20 were workplace shootings, most of which involved perpetrators who felt wronged by employers and colleagues.

“Speaking of shooting, you just wonder if the next one is going to take place at one of your favorite coffee establishments because Starbucks is now, a full page letter in Washington Post today signed by Howard Schultz.. basically asking customers to stop bringing firearms to their stores or even outdoors. So if you're a policeman, if you're an FBI agent, if you are any kind of officer... no longer at Starbucks,” said Rios.

“I don’t know if people like the shooter on Monday read the Washington Post or these treatises from people like Starbucks, but John Lott, our professor friend who was our guest Tuesday, who is the leading academic on gun use in the United States has some interesting statistics about the last... mass shootings, I think 80, 90 percent of them took place in gun-free zones.”

Rios failed to mention that Lott's research may have been paid for by the gun lobby, he has been caught creating a false persona to praise his pro-gun books on Amazon.com and that several of his claims have been debunked.